93869-53-5Relevant articles and documents
Dynamic Conformational Behavior in Stable Pentaorganosilicates
van der Boon, Leon J. P.,Hendriks, Jesper H.,Roolvink, Danny,O'Kennedy, Sean J.,Lutz, Martin,Slootweg, J. Chris,Ehlers, Andreas W.,Lammertsma, Koop
, p. 3318 - 3328 (2019)
Silicates with five organic groups are conformationally dynamic even with two bidentate ligands. Symmetry breaking by incorporating a single nitrogen or phosphorus atom provides insight into their dynamic behavior. N-containing silicates with bidentate 2-
Dibenzophosphaborin: A hetero-π-conjugated molecule with fluorescent properties based on intramolecular charge transfer between phosphorus and boron atoms
Agou, Tomohiro,Kobayashi, Junji,Kawashima, Takayuki
, p. 4373 - 4376 (2007/10/03)
(Chemical Equation Presented) The first dibenzo-1,4-phosphaborins were synthesized and characterized by X-ray crystallographic analysis. The phosphaborins exhibited UV/vis absorption derived from intramolecular charge transfer from the phosphorus atom to
Water soluble phosphines Part XV. Syntheses of multiply functionalized and chiral phospine ligands by Pd-catalyzed P-C and C-C coupling reactions
Brauer, David J.,Hingst, Martin,Kottsieper, Konstantin W.,Liek, Christian,Nickel, Thomas,Tepper, Michael,Stelzer, Othmar,Sheldrick, William S.
, p. 14 - 26 (2007/10/03)
Phosphine ligands containing mono- and multiply substituted aromatic substituents (1-13, 19a and 19b) are accessible in high yields by palladium-catalyzed P-C coupling reactions between primary, secondary or disecondary phosphines and iodo- or bromoaromatic compounds. The reaction is of broad applicability and compatible with electron donor or electron acceptor substituents in ortho, meta or para position to the halogen in the aromatic ring systems. It may be performed in protic and aprotic solvents. The chiral spirocyclic boronato complex 15a is formed upon reaction of 3 with boric acid, while with benzeneboronic acid 15c with a peripheral Lewis acid group is obtained. The Pd-mediated P-C coupling reaction of primary phosphines proceeds stepwise, tailor-made chiral secondary (16) and tertiary phosphines (17) being formed in high yield. Through combination with Suzuki-type C-C coupling reactions, the scope of Pd-catalyzed P-C coupling may be extended further, novel ligands (20a, 20b, 21a, 21b) with biphenylyl substituents being accessible. The X-ray structures of the salicylic acid derivative 3 (space group P1) and of ortho-iso-propylphenyl-diphenylphosphine 6 (space group Pbca) have been determined.